Z331 Fall 2010 Ecampus Week 6 Lecture 3 Energetics Posted

Z331 Fall 2010 Ecampus Week 6 Lecture 3 Energetics Posted -...

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Week 6: Lecture 3: Chapter 10 –   Muscular Tissue: Energetics & Force of  Production
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Figure 10–9, 293 & 10-12, 296-297 Sustained muscle contraction  uses a lot of ATP energy Muscles store enough energy to  start contraction Muscle fibers must manufacture  more ATP as needed ATP and Muscle Contraction
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Figure 10–9, 293 Immediate Energy ATP & Creatine phosphate  Short-term Energy (Anaerobic) Glucose & glycogen Long-term Energy (Aerobic) Glucose, fatty acids, amino acids ATP Sources Tortora,  10 th  ed.  Figure  10-13 Tortora, 10 th  ed. Figure 10-13
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ATP and CP Reserves ATP (Adenosine  triphosphate):  the active energy  molecule Creatine phosphate  (CP or  phosphocreatine): the storage  molecule for excess  ATP energy in  resting muscle Silverthorn, 4 th  ed., Fig. 12-13 Figure 2–24,  57 ATP + Creatine <-> ADP + Creatine 
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Recharging ATP Energy recharges  ADP to ATP: using the enzyme  creatine  phosphokinase   (CPK     = creatine kinase)   When CP is used up,  other mechanisms  Silverthorn, 4 th  ed., Fig. 12-13 ATP + Creatine <-> ADP + Creatine  Phosphate
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Energy Storage in Muscle Fiber Table  10–2,  309 Marieb, 6 th   ed.  Fig. 9- 18
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Aerobic vs.  Anaerobic  Respiration Hole’s, 10 th  ed. Figure 9-13 Cells produce ATP  in 2 ways: Aerobic (with O 2 metabolism of FAs &  glucose in the  mitochondria Primary source at rest &  light activity Produces 34 ATP per  glucose
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This note was uploaded on 02/15/2011 for the course ZOOLOGY 331 taught by Professor Amyharwell during the Fall '10 term at Oregon State.

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Z331 Fall 2010 Ecampus Week 6 Lecture 3 Energetics Posted -...

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